EPJ Web of Conferences 274, 04005 (2022)
https://doi.org/10.1051/epjconf/202227404005

Subleading power corrections to heavy quarkonium production in QCD factorization approach

¹ Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
² Physics Department, University of California, Berkeley, CA 94720, USA
³ Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
⁴ Theory Center, Jefferson Lab, Newport News, Virginia 23606, USA
⁵ Department of Physics, The College of William & Mary, Williamsburg, Virginia 23187, USA
⁶ C.N. Yang Institute for Theoretical Physics and Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA
⁷ SUBATECH UMR 6457 (IMT Atlantique, Université de Nantes, IN2P3/CNRS), 4 rue Alfred Kastler, 44307 Nantes, France
⁸ Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan

^* e-mail: kazuhiro-watanabe@st.seikei.ac.jp

Published online: 22 December 2022

Abstract

We report the current understanding of heavy quarkonium production at high transverse momentum (p_T) in hadronic collisions in terms of QCD factorization. In this presentation, we highlight the role of subleading power corrections to heavy quarkonium production, which are essential to describe the p_T spectrum of quarkonium at a relatively lower p_T. We also introduce prescription to match QCD factorization to fixed-order NRQCD factorization calculations for quarkonium production at low p_T.